Crane



Dec. 25, 1923. 1,478,636

A. CLAYDEN CRANE Filed Aug. 11 1919 3 Sheets-Sheet 5 INVENTOR Afiiwydez2 BY %1%/WM& ATTORNEY li atented Dec. 25, 1923.

warren ARTHUR CLAYDEN, 0F RICHEEQND, ENGLAND.

CRANE.

Application filed August 11, 1919. Serial No. 316,648.

To (ZZZ whom it may concern:

Be it known that I, ARTHUR CLAYDEN, a subject of the King of Great Britain and Ireland, and residing at 1 Red Lion Street, Richmond, in the county of Surrey England, have invented certain new and useful Improvements in Cranes (for which it have filed an application in England No. 13983, filed Aug. 28, 1917), of which the following is a specification.

This invention relates to devices for use in power or manually operated hoists or cranes having a swinging jib.

The object of the invention is to provide a portable or stationary hoist or crane for general agricultural purposes but which is chiefly intended for simplifying sack-lifting after filling from threshing machines to enable the person who attends to the filling of sacks when threshing by machinery to deliver them into or ready for carts or other places by the use of a single hand operated cord with perfect safety, or by an automatic action of the filled itself upon the apparatus during the lifting of the bag.

According to my invention the portable or stationary hoist or crane comprises a platform mounted on wheels and having a vertical standard and a stationary frame; brackets or uprights for carrying friction and clutch gear combined with Winding drums; a swinging arm or jib forming part of a truss frame pivotally supported; sets of pulleys arranged in connection with the said members and suitably supported; a lifting rope for the filled bags and a control rope by which the apparatus is put in or out of action each traversing its series of pulleys; and a frictional or positive locking device for the swinging arm or jib.

The winding drums are adapted to be frictionally or positively clutched by co-acting surfaces which may be corrugated anda resiliently arranged or constructed lever is fixed to an eccentric bearing supporting one end of the winding drum shaft which can be revolved by the lever so as to throw the same into or out of gear with a driving shaft; the other end of the said lever is attached to theoperators control rope by which the apparatus is put into or out of action.

Mounted upon the standard is a corrugated drum or wheel which with a corrugated co-acting block connected to a resiliently controlled rod, constitute a positive locking device for the swinging arm or jib when such is stationary during the lifting of a bag. Arranged in connection with the swinging arm or jib is an oscillatory lever or bars adapted when struck by a bag in its upward movement to automatically act on the control rope to operate the parts to stop the lifting action of the winding means. The corrugated members of the winding gear are provided with spring controlled levers or catches to impart a locked contact when the parts meet.

The accompanying drawings illustrate an embodiment of my invention as power driven by transmission from the portable engine of a threshing set.

In the drawings Fig. 1 is a side elevation.

Fig. 1 is a detailed view of the friction driving arrangement showing the actuating lever in another position.

Fig. 2 is a plan of the lower or platform part with friction or positive clutch gear combined with winding drums.

Fig. 3 is an enlarged plan of means, as shown in the upper part of Fig. 1 for looking the swinging arm or jib.

Fig. 4 is an enlarged detail view of part of 3 illustrating the pivotal point of the swinging arm or jib.

Fig. 5 is a rear view of the lower part of Fig. 1.

Fig. 6 is a plan of part of positive clutching gear for winding drums as when corrugated surfaces are employed and further showing a platform or bracket pulley support illustrating the running connection of lifting rope therewith;

Fig. 7 is a similar view illustrating in part. an alternative form of clutch for the winding drums which consists of uncorrugated and co -acting surfaces and further 'showi 'ig the running connection of the control rope with the winding gear and its traverse over guide pulleys upon a platform or bracket support carried at the upper end of the standard upon the main platformof the apparatus and from these to a point within the operators reach; and

Fig. 8 is an enlarged vertical sectional detail showing the. eccentric mounting of the drum and the relative positions of the friction element on the driving shaft and the brake block on the platform.

In carrying my invention into effect A is a main platform mounted so as to be portable on wheels B which are capable of swivelling, but can be held stationary by blocks or wedges C. Upon the platform A is mounted a standard D and carried'upon the said standard is a swivelling arm or jib E- adapted to have a swinging movement or circular sweep is indicated at E in Fig. 2."

The standard D is held in position by a socket connectionwith the platform A andiron rods a see Fig. l, and straining wires 7) see Fig. 2, and said standard may beof metal and circular in order that the jib E my swing round it.

the rear of the main. platform A are fixed brackets or uprights V] for carrying used one drum will run idle while the other is performing' its work. These drums F and F are free to revolve on a shaft F which carries a friction clutch wheel G at one end, a dividing circular block at fixed between-the said drums anda similar block 0 positioned at the opposite end to the wheel G, the blocks (Z ande are adjustableon the-shaft F by setscrews, and act as distance members. At the inner surfaces of the wheel G and block 6 there is a' circular. corrugated clutch plate at the wheel G and a similar plate f at the block 6, and

opposite these clutch plates are similar clutch plates g and: 9 carried by the flanges of the drums F and F which are slidable on th'eaxisFfi The clutchplates f a11Cl g .EL'11(l f and g are brought together by hand and held together in any known manner before startingthe apparatus into its running action; Or the clutch plates can be fixed inposition by projections 72 If, it It; on each of thefclutcli'plates g g and-by levers 714 9,75 on'th'eclutch plates f f adapted to engage the aforementioned lugs and to lock: the clutches when in use. 011' the main platform A: may be connected for holdingth'e drumstation'ary' when not in use." The shaft'F is' carried'at one endin an eccentric bearing which can b'e-revolved so as to throw-the wheel G carried on the shaft in or out" of gear with the friction elementifficarried by the driving shaft A and -is-mount'ed in the brackets-or uprights W which'may be'boltedito'the main platform A. Theeccent'rically mounted end of the shaft'F is under the control of the op-' erator to varythe movements of the bearing by a lever K the endiJ of which is connected to the eccentric. The lever K projects over the main platform A and has fixed to it. a vertical bar L having a hook to attach a control rope S to, and on the lever K is an adjustable counter-weight L Below the lever K is fixed a spiral spring L attached to the lever K by one of its ends and to a su porting member L fixed upon a bracket V. of the windingxgear, the function of which is to assist in bringing the lever K quickly back to stop the. lifting or winding action by separating the'wheel G from the-friction elementA and lowering the Wheel G on to-the brake block G The bracket V has a support L for a pulleyL over which the control rope S passes.

l/Vhen power driven the driving wheel M is carried on the main axis and is driven from" a source of power, suchas the portable engine -of a threshing set or a suitable engine or motor positioned on the platform A in drivingalignment with the wheel M, or by hand lever when'operated manually.

The jib Eiscarriedon a pivot E on the standard D atthe front thereof and is ar- 7 ranged on the truss principle to comprise bars E E and E duplicated or arranged at'both sides-and bolted together by bolts E and assembled as shown. in Figs. 1 and 4c to carry thepulleys m, n. and control cord or rope'S and lifting or winding rope Tin a centra'lmanner in their relatio to the main platform'A.

The lifting rope T, positioned'between the horizontal bars E and E after passing over the pulley m proceeds on to and between pulleys P P, P and P carried bya platform or bracket; P mounted on the standard D andfromthem-to winding drum F see Figs. 1- and 6. A similar pulley n conducts the'control rope S on to and over the pulleys R R Rfl' R which are carried by "a platform R supported by the standard DJ Between and at theend o'f'the'horizoir tal bars and'E see Fig. at is placed a safety lever N to have a pivotal movement on the bolt E at the outer end of the jib E for automatically stopping the winding gear.

Thislever 7 plan being arranged between the space bars E and'pivoted'therebetween at a point near its vertex onthe' bolt E9, the outerportion of the said leveropera-tingbetween the ver-' tical barsE as shown in Fig. 1/ The-space N between the side portions of the lever N I allows the li'ftingrope' T to pass th rough it and a hook q is' fixed to the said lever to take the loeking' device cord which isoper ated simultaneously with the control rope S:

N is of- U shape formation in i ()irth'e top ofthejib E and the hinged end E thereof is positioned the lockingdeviceQ see Figs. 1 and 3'which is fixed to 1 the jib E. The device comprises two fixed blocks 0 and 72 forming bearings for a sliding spindle attached at one end thereof to a sliding block p and at the other end thereof to a sliding corrugated clutch Q A spiral spring is placed around the spindle and between the blocks 71 and p to force the clutch member Q out of contactwith the member Q A cord Q which is worked with the control rope S passes around the front sliding block p and continued under the jib E on to two pulley wheels Q}, Q which are attached to each side of the hinged portion of the jib E. From this point two single cords are used, one Q continued. under jib E and fixed to the safety lever N with an interposed spring Q. The second cord J is continued downwardly to standard D on platform A. A hook Q is fixed to standard D to receive loop in cord Q The member Q which consists of a corrugated metal wheel is fixed to standard D and clear of jib E to receive the corrugated clutch Q Above the said locking device is fixed the bracket P, as previously referred to, for receiving the lifting rope T. The standard I) is drilled for the rope T to pass through. The horizontal nille s P P are for an de or horizontal use as fairleads for hauling. The pulleys P 1 are placed directly over the hinge of jib A horizontal pulley P is fixed at back of standard D level with the drums as a fairlead for hauling. The bracket R, see Fig. 7, is fixed to top of standard, projects in line with lever K and is held in position with a stay iron R see Fig. 1.

To work the machine the clutch surfaces are put into contact or mesh by bringing the clutch surfaces together, the driving belt is attached, (if the machine is power operated) to the driving wheel M which is allowed to run freely,the operator then pulls the control rope S which puts the winding gear in running operation through the action of the lever K throwing the parts into gear when the cord S is pulled, the hauling or lifting rope T having been previously attached to the filled sack before the control is operated, the sack is raised to the height re quired for placing the sack into a cart or the like into which it is swung or lifted, the action of pulling the control rope S to put the winding gear into operation to lift the goods, also causes the branch portions of the control rope S to operate the locking device by which the movement or swing of the jib E when carrying the lifted bag can be arrested at the required point in the movement or Swing of the jib E. The action of the apparatus will continue while the pull is exerted upon the control rope S, but as soon as the pull is taken 0d the control rope S, the lever K falls by gravity and the reaction of the spring L to put the winding gear out of action so that hauling or lifting is stopped and the bag remains suspended.

It is thought apparent that the lever K controls the drum so that the drum will be actuated for winding, held neutral and braked, for when the rope S is pulled by the operator, the friction wheel G is brought .into contact with the pinion above it, which is the driven counterpart, the apparatus being in gear winding takes place, and this continues until the operator withdraws his pull on the ropes, or if he fails to do this and is still holding the rope, the automatic knock-off action comes into use, for as soon as a bag shoulder, in its ascent, comes into contact with the lowered end of the member N (as in dotted position Fig. 1) the pull on the rope S is withdrawn or relaxed, the lever K drops and the wheel G is withdrawn from its pinion and comes into frictional contact with the brake block below it. This is the brake action. The neutral position is met by varying the pull on the rope S which regulates the amount or intensity of the frictional contact.

The improved machine can be driven by power as previously referred to or by hand by applying a hand wheel or lever to the main shaft in place of the wheel M, or changing the driving gear to toothed wheels. The machine is self-contained and can be arranged to travel on track, road or field and can be put into general use for hoisting or lifting and other agricultural purposes such as loading sacks of potatoes into carts or the like operations.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is 1. The combination of a vertical standard carried by and secured to a base; a swinging jib with pivots therefor mounted on said standard; a guide pulley attached to said lb; a pulley frame supported by the said standard; guide pulleys attached to said frame, winding means carried on a shaft supported on a frame mounted upon said base; an eccentric bearing, supporting one end of the winding shaft, an arm connected to the eccentric bearing; a friction gear member upon the winding shaft; an operable countershaft for driving the winding shaft; a friction gear member upon the countershaft to co-operate with that upon the winding shaft; a flexible member attachable at one end to the load and at the other end attached to the winding means, passing over said guide pulleys; a further guide pulley attached to the said jib; a further pulley frame supported by the said standard; guide pulleys attached to this said frame; a guide itsflotl'ier end attacl'i'ed to the free end of the arm attached to the eccentric bearing, so that when the freeen'dof the controllmember ispulled" the arm is raised and the eccentric bearing-is oscillated t'oj put the friction gears 111- coiitact to cause the Winding slia'tt' to revolve with the 'coun't'ersliaft.

2. The combination of a platform, support wheelstherefor, a Vertical standard carried by and secured to said platform, a

swinging" jib frame with pivots therefor mounted on said standard, a guide pulley attached to the said jib frame; apulley frame supported by the top otthe said standard; guide pulleys attached to the saidfram'e; winding means in drum form carried on a shaftsupported on a frame mounted upon said; platform, an eccentric bearing supporting one end of the winding shaft; a lever" connected to the eccentric bearing; a'fi'iction' gear member upon the windin shaft an 0 erabl'e counters'ha 'tt for driving the winding shaft; a friction gear member upon the counter-shaft to co-op crate with that upon the winding'slialtt; a flexible member attachable at one end to the load andat the other end attachedto the winding means and'passing' over the said guide pulleys; a further guide pulley attached to the said ib frame; a further pulley trame supported by the top of the said standard; guide pulleys attached to this said frame, a guide pulley attachedtoth'e frame of thew-indingmeans;- and a flexible member' having a free end, operable as a control actuation device, passed over the latter guide pulleys and at'itsotherend attached to the free end ofthe lever attached to the eccentric bearing, so that when the free end of the control member is pulled, the lever is raised and the eccentric bearing is'o'scillated and puts tliefriction gears in contact to cause the Winding shaft to' revolve with the counter-shaft.

3. Hoist mechanism as claimed in Clitlll'l' 1 characterised in that the'arm connected to and operating the eccentric bearing carries a weight and is connected to a recoil springanchored. to the frame of the winding-"means: 4t: Hoist mechanism as claimed in claim" 1, characterised in that oscillatory ba'rs are pivotally' mounted on'the said jib and are achipted to'be actuated by the load when nearing" the limit oi its upward movement, said bars at their free ends being engaged in working connection with the flexible member; forming the control actuation de' vice, so that when the latter 1S operated to raise the arm attached to the BCCBIlt-Ild bearing of the Winding means to put the latter into operation, the said bars are drawn down,- into working position above the load, against the resistance of a recoil spring interposed in a flexible member attached at one end to the said bars passes over a guide pulley on the jib and at the" other end is attached to the vertical standto engage with the said cylindrical member for locking the said jib to said cylindrical member. v

6. The combination in hoist mechanism of a swinging jib, a corrugated cylindrical member stationary relatively to the jib, a corrugated block adapted to co-act with such cylindrical member, means whereby such block is slidably mounted upon the said jib, resilient means for normally" holding the said; block out of'engagemeiitwith said cylindrical member, and means whereby the saidblocli is'caused to engage with the said cylindrical member'forlocking the said jib to said cylindrical member. a V

In testimony whereofl have iiaiueto this specification.

ARTHUR, CLAYDEN.

signed my 

